#Pyneo

This module lets one make cypher requests to a neo4j server on a google app engine application. In order to be appengine compatible, the code uses only urllib for the requests

##Example If you want to send cypher requests to a remote server, you need to tell pyneo your username and password first for neo4j authentication.

>>> from pyneo import GraphHandler
>>> graph_handler = GraphHandler(host_port='localhost:7474',
>>>                              username='neo4j',
>>>                              password='neo4j')

Then, you can send cypher requests to your neo4j server

>>> graph_handler.send_query('MATCH (n) RETURN ID(n) AS id LIMIT 25')
[{'id': 0}, {'id': 1}, {'id': 2}, {'id': 3}, ..., {'id': 23}, {'id': 24}]

And if you want to add parameters (and that's the good way if you want to avoid injections)

And with parameters

>>> graph_handler.\
>>>     send_query('MATCH (n {name: {p}}) RETURN ID(n)', p="test")
[{'id': 20}]

Be careful with your requests because we don't handle returning nodes, relations or paths yet. However, you can return ID(n), LABELS(n), n.name or other parameters.

One day, you might want to get a full graph to display it in d3js as explained at: https://neo4j.com/developer/guide-data-visualization/#_neo4j_query_result_format

If you want to do so, from now on you need to send a graph query

>>> graph_handler.ask_graph('MATCH path = (n)-[r]->(m) RETURN path')
{
'results': [
    {
        'columns': ['path'],
        'data': [
            {
                'graph': {
                    'nodes': [{...}, {...}],
                    'relationships': [{...}]
            },
            {
                'graph': ...
            },
            ...
        ]
    }
],
'errors': []
}

If you want to perform your request over https, when initiating the graph, you can provide the parameter secure=True

and hopefully, soon you will be able to download our graph polymer component which directly displays that data

##TODO

• Handle returning nodes, relations and paths
• unify graphs with normal queries